Ignition Systems - 1
Chapter 47
- 1.Ignition coils are basically:
- A.
Step-down transformers.
- B.
Step-up transformers.
- C.
Ballast resistors.
- D.
Switching transistors.
- 2.A high-voltage spark must cross the spark plug electrode as the piston approaches top dead center (TDC) of the
- A.
Exhaust stroke.
- B.
Ignition stroke.
- C.
Intake stroke.
- D.
Compression stroke.
- 3.When the driver turns the key to the start position, an electrical connection is made between the vehicle battery and the ____________ of the ignition coil.
- A.
Secondary winding
- B.
Ballast resistor
- C.
Primary winding
- D.
Distributor
- 4.The type of ignition system in which two cylinders share one coils is called a:
- A.
Distributor ignition system.
- B.
Waste spark ignition system.
- C.
Coil-on plug ignition system.
- D.
None of the above
- 5.Most vehicles today use the _________ type of ignition system.
- A.
Coil-on-plug
- B.
Waste spark
- C.
Breakerless
- D.
Distributor
- 6.The component the ignition system uses to convert low voltage and high current into high voltage and low current is called the:
- A.
Ballast resistor.
- B.
Advance mechanism.
- C.
Condenser.
- D.
Induction coil.
- 7.The collapse of the magnetic field inside the ignition coil happens as a result of the interruption of current to the:
- A.
Primary winding.
- B.
Secondary winding.
- C.
Ignition control module.
- D.
Electronic control module (ECM).
- 8.The amount of voltage needed to initially get the spark to jump the spark plug gap is called the:
- A.
Available voltage.
- B.
Required voltage.
- C.
Induced voltage.
- D.
None of the above
- 9.As engine rpm increases, the ignition timing must:
- A.
Retard.
- B.
Advance.
- C.
Remain the same.
- D.
Remain the same and then retard.
- 10.The primary winding of the ignition coil has approximately _______ turns of enameled copper wire.
- A.
A few hundred
- B.
1,000
- C.
15,000
- D.
None of the above
- 11.The hottest part of the spark plug is the:
- A.
Ground electrode.
- B.
Insulator.
- C.
Center electrode.
- D.
Metal shell.
- 12.The pattern in which a lab scope shows all the cylinders firing in sequence is called the:
- A.
Parade pattern.
- B.
Raster pattern.
- C.
Spark line.
- D.
Firing line.
- 13.Tech A says that a defective crankshaft or camshaft position sensor can prevent an engine from starting. Tech B says that if a diagnostic trouble code (DTC) indicates a problem with the crankshaft or camshaft position sensor, you will always have to replace the sensor. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 14.Tech A says that you can test for defective ignition wires by using a spray bottle and water. Tech B says that you can test for defective ignition wires with a grounded test lead. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 15.Tech A says that you can test the ignition coil with an ohmmeter. Tech B says you can't test the ignition coil with an oscilloscope. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 16.Tech A says that the crankshaft sensor is used to determine vehicle speed. Tech B says the cam sensor is used to control fuel pump speed. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 17.Tech A says that a Hall-effect sensor can be used in an electronic ignition system. Tech B says that an optical-type sensor can be used in an electronic ignition system. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 18.Tech A says that ignition coils are essentially transformers. Tech B says that the primary side of the coil delivers the high voltage spark that is necessary to jump the plug gap. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 19.Tech A says that a secondary ignition shock is enough to kill you. Tech B says that a secondary ignition shock does not have enough current to kill you. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
- 20.Tech A says that it is easiest to set the spark plug gap on all the plugs at one time. Tech B says that spark plugs come pre-gapped and you should never have to check spark plug gap. Who is correct?
- A.
Tech A
- B.
Tech B
- C.
Both Techs A and B
- D.
Neither Tech A nor B
Questions: 8 | Attempts: 15600 | Last updated: Feb 9, 2021
-
Sample QuestionWhat does a spark plug do?
Questions: 10 | Attempts: 5122 | Last updated: Jun 22, 2020
-
Sample QuestionHow many revolutions of the crankshaft are in a complete cycle for a 4-stroke-cycle engine?
Questions: 24 | Attempts: 2633 | Last updated: Jun 14, 2021
-
Sample QuestionA vacuum gauge is connected to the intake manifold of an engine. The needle fluctuates between (15 in. Hg and 20 in. Hg) at idle. This reading indicates:
Back to top